Articles about rhel | UserComp.com

DNSmasq not working: 3 nameserver lines in resolv.conf on RHEL 8.10

This article discusses a common issue where DNSmasq is not resolving domain names on a RHEL 8.10 box, even though there are 3 nameserver lines in the resolv.conf file. We will provide a solution to this problem.

Understanding Significant Memory Usage by PID Process in RHEL 8.6 with systemctl services

This article explains why the PID process of systemctl services on RHEL 8.6 is consuming significant memory and provides solutions to optimize memory usage.

Baddiskperformance on Dell Hardware Machines: Inconsistencies in Controller Firmware Version

Experiencing bad disk performance on Dell hardware machines, such as the R750/R760, with 14 disks of 16TB each in a Hadoop cluster installed on RHEL 8.6? Learn how inconsistencies in controller firmware version may be the cause and how to resolve it.

Check NFS Mount Using SATA SSD NVME Disk on RHEL 8.6

Learn how to check NFS mount using SATA SSD NVME disk on Red Hat Enterprise Linux (RHEL) 8.6. This guide provides a step-by-step process to verify the NFS mount and ensure proper file system access.

VMWare Workstation 16 Pro: Spontaneous Background Keystrokes in Windows Server 2019 and RHEL 8

This article discusses a problem where spontaneous background keystrokes are observed in VMWare Workstation 16 Pro, specifically version 16.1.2 build-17966106, when running Windows Server 2019 Standard and guest operating system RHEL 8 64-bit. We will explore possible solutions to this issue.

Issues Installing VirtualBox Guest Additions on RHEL 9 Server (GUI)

Experiencing issues with installing VirtualBox Guest Additions on RHEL 9 Server? Learn about the common causes and solutions in this tech support article. Improve your system's performance and functionality. Read more!

Enabling VirtualBox Guest Additions on RHEL 9 Server (CLI)

This article explains how to enable VirtualBox Guest Additions on RHEL 9 Server using the command line interface (CLI). This guide assumes you have upgraded RHEL 9.4 to RHEL 9.5 and are using Windows 11 Home 23H2 as the host operating system and RHEL 9.5 (CLI) as the guest operating system.

Enabling Lmod Alternative to Environment Modules on RHEL Servers

This article provides a step-by-step guide on how to enable Lmod as an alternative to Environment Modules on RHEL servers. This change can be made using the 'sudo yum install Lmod' command, replacing the existing 'modules' configuration.

RHEL 9.5 EC2 Instance RDP Connection Fails: Quick Fix

Learn how to resolve RDP connection issues on your RHEL 9.5 EC2 instance with our step-by-step guide. Enabling EPEL and installing XRDP and TigerVNC Server can quickly fix this problem.

RHEL9 Subscription Manager Fails to Differentiate Original VM and Cloned VM

This article addresses an issue where the RHEL9 Subscription Manager fails to differentiate between an original VM and a cloned VM, causing complications when managing subscriptions. We provide a solution to this problem.

Poor I/O Performance with qemu-kvm Native Block Device (Dedicated Disk) in RHEL 9

Users running VM RHEL 9 with qemu-kvm 9.0.0 experience poor I/O performance. This article provides potential solutions based on collected FIO metrics.

How to Run ncat Version 5.51 on RHEL7 Without Showing the Version

Learn how to use ncat version 5.51 on Red Hat Enterprise Linux 7 without displaying the version number. This tutorial provides a step-by-step guide to help you get started.

MySQL Secure Installation on RHEL8: Root Password Prompt

During a new installation of MySQL on RHEL8, the MySQL secure installation script prompts for the root password even if it was not previously set. This article explains the reason behind this behavior.

Configure Trust List in RHEL 9: A Comprehensive Guide

Learn how to execute commands to perform security configurations, specifically focusing on configuring the trust list in a recently installed RHEL 9 system. This guide provides step-by-step instructions to ensure your system is secure and up-to-date.

Can't Connect USB 3.0 Storage Device to RHEL 8.8 VM on ESXi 6.5

Experiencing issues connecting a USB 3.0 storage device to a RHEL 8.8 virtual machine running on VMware ESXi 6.5? Learn about potential solutions to troubleshoot and resolve this problem. Read more for detailed tech support.

RHEL 8.6: Troubleshooting pgrep Hangs

In this tech support article, we will discuss how to troubleshoot pgrep hanging issues in RHEL 8.6. Learn about common causes and solutions for pgrep not responding in a timely manner and how to optimize its performance. Read more to find out more about this Linux command and how to resolve related issues.

Start Service on RHEL8: A Tech Support Guide

In this tech support article, we will guide you through the process of starting a service on Red Hat Enterprise Linux 8. We will cover common issues such as setting the runuser and debugging with a shell script. Follow these steps to get your service up and running.

RHEL 8.5: User Directory Not Created in /run/user/$UID upon Podman Command Execution

This article discusses an issue where a user directory is not created in /run/user/$UID upon executing Podman commands on RHEL 8.5. The article covers the necessary steps to resolve this problem.

Troubleshooting SSH Remote Machine Delayed Connection (2 minutes) on Windows 11 and RHEL 9

Users have reported experiencing significant delays (2 minutes) when connecting to remote machines via SSH using Windows 11 cmd and RHEL 9 ttylogin server. This article provides suggested solutions to help resolve the issue.

Migrating RHEL 6 Email Server to RHEL 9: Installing Postfix with MySQL Client

Learn how to install and configure Postfix email server with MySQL client on a new RHEL 9 server during the migration process from an old RHEL 6 server.

Converting RHEL 9.3 Cloud Image: UEFI to BIOS Booting Image Failure

Learn how to troubleshoot and resolve issues when converting a RHEL 9.3 cloud image from UEFI to BIOS bootable system.

Upgrading Ansible from Python 2.7 to 3.8: Playbooks Run Slower?

When upgrading RHEL from Ansible 2.9.27-1.el7.noarch with Python 2.7 to Ansible 5.4 with Python 3.8, playbooks run significantly slower. This article discusses potential causes and solutions.

Configuring RHEL 8.6 ifcfg Files: Creation and Overwriting

Learn how to create and overwrite ifcfg files in RHEL 8.6. This article explains the process of making changes to files and confirming the written confirmations.

Setting MAILFROM in RHEL 8 & RHEL 9 Crontabs: HOSTNAME Not Defined

This article explains how to set the MAILFROM variable in RHEL 8 and RHEL 9 crontabs when the HOSTNAME environment variable is not defined.

Resizing Partitions da2 on RHEL 7.2 and 7.6 Machines: A Success Story

In this tech support article, we discuss the process of resizing partitions da2 on RHEL 7.2 and 7.6 machines, allowing for the growth of the /var and root filesystems. Learn how to successfully complete this task.

Differences in Running 'wlsstart' Scripts with Absolute vs. Relative Paths in RHEL8 Linux

This article explores the different behaviors when running the 'wlsstart' script with absolute and relative paths in RHEL8 Linux systems. The absolute path uses 'systemctl', while the relative path runs './wlsstart'. Understand the implications of each approach.

Hardening RHEL 8.9: Applying crypto_LUKS Encryption to Active Partitions

Learn how to apply crypto_LUKS encryption to active partitions in RHEL 8.9 for enhanced security.

Samba Shares Fail: Pre-Authentication Failed on Multi-HPC Systems

Experiencing issues with Samba shares failing during file transfers on multiple High Performance Computing (HPC) systems? This article explores possible causes and solutions for the Pre-Authentication Failed error.

RHEL 8.4 GUI Login Getting Stuck: Mouse Becomes Unresponsive - Tech Support

Users of Red Hat Enterprise Linux 8.4 have reported issues with the GUI login getting stuck and the mouse becoming unresponsive. After attempting various solutions found online, many have resorted to accessing the terminal using Ctrl+Alt+F1. This article provides a suggested solution.

Brew Install Fails: 'No Space Left on Device' in RHEL9 - Possible Fix

This article outlines the steps to resolve a 'No Space Left on Device' error during a Brew install on RHEL9. Follow the instructions carefully to free up space and successfully complete the installation.

Unable to Connect USB 3.0 Storage Device to RHEL 8.8 VM in ESXi 6.5

This article explains how to connect a USB 3.0 storage device to a Red Hat Enterprise Linux 8.8 VM running in ESXi 6.5. Follow the instructions below to resolve the issue.

Preserving Special File Permissions and Symbolic Links Across File Types in RHEL 8.6

This article explains how to use the tar command with specific flags to preserve hard symbolic links and permissions when transferring files between systems running RHEL 8.6.

Alternative Installation Methods for Video4Linux (v4l) and Linux DVB (DVB) Drivers on RHEL 9

Explore alternative methods for installing Video4Linux (v4l) and Linux DVB (DVB) drivers on RHEL 9. Learn how to update and configure these essential multimedia components for optimal performance. Perfect for Linux enthusiasts and professionals seeking a reliable and efficient solution.

RHEL + kill -9 not really killing the process

If you're trying to terminate a process on RHEL using kill -9, you may be disappointed to find that it's not working as expected. In this article, we'll explore the reasons why kill -9 might not be killing the process and provide some tips on how to troubleshoot the issue.

Troubleshooting VMWare Player Freezing on RHEL 9

Learn how to resolve the issue of VMWare Player freezing on RHEL 9. Follow these troubleshooting steps to get your VMWare Player working smoothly again.

Troubleshooting RHEL 8.6 Network Connectivity: DHCP Address Not Obtained

Learn how to resolve network connectivity issues in RHEL 8.6, specifically when the DHCP address is not obtained. Understand the differences between RHEL 8.4 and RHEL 8.6 in terms of networking configuration.

Can't ping in RHEL 7 in VMware pro

Having trouble pinging in RHEL 7 using VMware Pro? This article provides troubleshooting steps and solutions to resolve the issue. Explore common causes and learn how to fix the problem to ensure smooth network connectivity in your RHEL 7 virtual environment.